In this mode the MicroTurbine is used only as a standby generator. During a utility outage, the MicroTurbine and protected loads are isolated from the grid and the MicroTurbine powers the protected loads. When utility power is restored, the MicroTurbine automatically shuts down and the protected loads return to utility power.

Standby/Grid Connect

In this mode the MicroTurbine is normally operated in the Grid Connect mode to reduce power draw from the utility. During a utility outage, the MicroTurbine is used to power protected loads.

When utility power is restored, the protected loads return to utility power and the MicroTurbine automatically returns to Grid Connect mode.

User Controls

The primary user control is a selector switch which determines the overall dispatch mode for the MicroTurbine. There are three operating modes:

LP1 LP2 LP3

S1 S2

Dual Mode Controller

Protected loads will be powered by the MicroTurbine (operating in Stand Alone mode) during the utility power outage. When utility power is restored, the DMC can be set to automatically return the MicroTurbine to Grid Connect service. The DMC also allows the MicroTurbine to be used as an automatically-dispatched standby generator.

Automatic

Dual Mode Controller

Protected Loads

1.

2.

3.

Auto - The MicroTurbine is automatically dispatched in Grid Connect mode when the utility lines are ener- gized and in Stand Alone mode during a utility out- age.

MicroTurbine Power - The MicroTurbine may be dis- patched in Stand Alone mode only. The MicroTurbine output and protected loads will be electrically isolated from the utility lines.

Line Power - The MicroTurbine may be dispatched in Grid Connect mode only. During a utility outage, the MicroTurbine will shut down and the protected loads will not be powered.